I do not know if any such tanks are in production, but there where experimental electric tanks, just not with batteries, but with turbogenerators.

They didn’t make it past the drones.

and I wonder which blown up tank would pollute the environment more

tanks must represent like 0.001% of fuel consumption lol Road uses like cars, trucks and buses is 47% of all oil, and clearly an enormous fraction of that can be converted to use electricity instead